import 'package:flutter/material.dart';

void main() {
  runApp(
    MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text(
            '密码箱',
            textDirection: TextDirection.ltr,
            style: TextStyle(
              fontSize: 20.0,
              color: Colors.white,
              //fontWeight: FontWeight.bold,
            ),
          ),
          backgroundColor: Colors.blueAccent,
        ),
        body: Center(
          child: Text(
            '密码箱',
            textDirection: TextDirection.ltr,
            style: TextStyle(fontSize: 40.0, color: Colors.blue),
          ),
        ),
      ),
    ),
  );
}
